发表于：2005/6/28 16:51:00
#0楼
整个一天，我都要疯了。因为一句也没看懂。还是信号转换器方面的资料，名字就晕了：“Ramp generator”---强译：“斜坡发生器”--仪表里有这东西？然后就是关于输入信号的这一大段话：6 digital inputs make it possible to choose reset, up/down function as either NPN(short circuit to gnd.)or as PNP input(+24VDC). The trigger level is typically 8VDC with a pull up/dowm resistance of 3.5K corresponding to a load current of 6.9A .Via an analogue switch the up and down inputs can be switched between input filter for a pulse length >10ms or >0.5ms. The chosen filter is the same for all up/down inputs. The 10ms filter is used for elimination of contact-bounce. The reset input have a filter for pulse lengths>30ms. The arrow keys can be selected to work in parallel with the digital up and down inputs. 高手高手，一定出手相救啊。